- 摘 要
-
(華東建筑設計研究院有限公司, 上海 200002)
摘要: 大連綠地中心為超高層建筑,建筑高度 518m,結構高度 400. 8m,塔冠高度 117m. 大連風荷載較大,塔冠較高,為風荷載控制的超高層建筑. 結合建筑體型、功能布局以及結構受力要求,采用巨型框架支撐+核心筒+伸臂桁架結構體系. 整體結構彈性和彈塑性時程分析結果表明,結構整體指標滿足規(guī)范要求,主要構件性能滿足預定抗震性能目標的要求. 通過風洞試驗,分析了體型優(yōu)化和塔冠表皮開孔對塔樓風荷載效應的影響. 通過分析支撐和伸臂桁架對結構剛度的影響,確定結構抗側力體系和布置. 針對酒店區(qū)建筑布置的要求,對酒店區(qū)不同結構布置的受力性能進行對比分析,選擇合理的密柱深梁結構方案. 根據塔樓結構特點,探討剪重比的合理取值和提高剪重比的措施.
關鍵詞: 大連綠地中心; 超高層建筑; 風荷載; 巨型框架; 伸臂桁架; 剪重比
中圖分類號:TU973. 3 文獻標志碼:A 文章編號:1002-848X(2022)09-0030-06
DOI:10. 19701 / j. jzjg. HDY2201
Structural design of Dalian Greenland Center
BAO Lianjin, CHEN Jianxing, ZHOU Jianlong, WANG Dasui, QIAN Peng
(East China Architectural Design & Research Institute Co. , Ltd. , Shanghai 200002, China)
Abstract: Dalian Greenland Center is a super high-rise building with a building height of 518m and a structural height of400. 8m, and a tower crown height of 117m. Due to large wind load in Dalian city and the high tower crown, it is a superhigh-rise building controlled by wind load. Combined with the building shape, functional layout and the structural mechanicalrequirements, the structural system of mega braced frame and core tube with outrigger trusses is adopted. The results ofelastic and elastic-plastic time history analysis of the overall structure show that the overall index of the structure meets therequirements of the code, and the performance of the main members meets the requirements of the predetermined seismicperformance targets. Through the wind tunnel test, the influence of shape optimization and tower crown skin opening on thewind load effect of the tower was analyzed. By analyzing the influence of brace and outrigger truss on structural stiffness, thelateral force resistant system and layout of the structure were determined. According to the requirements of building layout inthe hotel zone, the mechanical performance of different structural layout in the hotel zone was compared and analyzed, and areasonable structural scheme of dense column deep beam was selected. According to the structural characteristics of thetower, the reasonable value of the shear weight ratio and the measures to improve the shear weight ratio were discussed.
Keywords:Dalian Greenland Center; super high-rise building; wind load; mega frame; outrigger truss; shear weight ratio
∗國家自然科學基金資助項目(5207804) ,“上海超高層建筑設計工程技術研究中心” 建設項目( 14DZ2252800) ,華建集團科研項目(19-1 類-0142-結) .
第一作者:包聯進,博士,正高級工程師,主要從事超高層結構和復雜結構設計工作,Email:blj0068@ ecadi. com.
[引用本文] 包 聯 進,陳 建 興,周 建 龍,等. 大 連 綠 地 中 心 結 構 設 計 [ J] . 建 筑 結 構,2022,52 ( 9) :30-35. BAOLianjin,CHEN Jianxing,ZHOU Jianlong,et al. Structural design of Dalian Greenland Center[ J] . Building Structure,2022,52(9) :30-35.
